Vol 1, Nomor 1, Januari 2016 Halaman:
| 581
Writing is a mental work of inventing ideas. It means that writing is a process of accumulating the
cognitive factors like the ability in using correct grammar or appropriate vocabulary and the
psychological factors such as motivation. As it is important to let the students learn and have fun at
the same time in writing, the teacher needs to explore and use the attractive media to motivate the
students in learning activities. The effective and efficient use of teaching media in learning process
can be seen from the students’ motivation upon the learning activities. It is important to build
motivation through the media of teaching to get the best result of writing. Therefore, the teachers who
want to teach writing for their students should also
pay attention with the students’ motivation in order to achieve the goal of teaching learning process.
Based on the elaboration above, the researcher makes investigation about the effectiveness of
Edmodo to teach writing viewed from students’ motivation.
2. RESEARCH METHOD
This research was conducted at Senior High School in Bandar Lampung, Lampung Province.
This research was conducted in 2015. The research method used in this research is a quasi-
experimental research. The design of this research was a simple factorial design 2x2 with Post- Test
Only Design. In the Post-Test Only Design, the subject of the research was chosen to determine the
Edmodo Class and Control Class. Edmodo Class was taught writing by using Edmodo, while the
control class by using Picture Series. At the end of the treatments, both of the groups were given post-
tests. In this post-test only design, the two groups of the subjects were first assigned to the different
treatments or control conditions. Then the Experiment and control class were given a post test
in the form of writing test. The result was analyzed by comparing the post-test scores of both groups by
using ANOVA or F-test and then by using Tukey test.
The population of this research was the tenth grade of Senior High School in Bandar Lampung
in the academic year of 2015 2016. There were eight classes which consist of 240 students. This
research used two classes, one class as the experiment and one as the control. Each class
consisted of 30 students, so there were 60 students as sample. And the researcher used cluster random
sampling.
Each class is initially divided into two groups according to the levels of Motivation: High and
low. High group and low group are used as the research sample, each consisting of 15 students.
The groups are obtained by using a questionnaire. Writing test used as an instrument of collecting
data. Writing test used to know the students’ writing skill and motivation questionnaire used to
know the level of students’ motivation. These two instruments was assessed by using readability test.
The result is that the questions of motivation questionnaire are clear and can be understood by
the students. The writing test in this research is readable since 80 students could understand the
instruction of the test.
The techniques used in analyzing the data were descriptive analysis and inferential analysis.
Descriptive analysis was used to know the mean, median, mode and standard deviation of the scores
of the writing test. To know the normality and the homogeneity of the data, the reseacher used
normality and homogeneity test. The normality and homogeneity tests were done before testing the
hypothesis.
Inferential analysis
used was
multifactor analysis of variance 2x2. It was used to test the hypotheses. Ho is rejected if Fo is higher
than Ft. If Ho is rejected, the analysis was continued to know which group is better by using
Tukey test.
3. RESEARCH FINDING AND DISCUSSION
